Machine for heating and hardening metal articles



(No Model.) A 5 sheets-sheet 1. H. WHITE. MAHINE FOR HEATING ANDHARDBNING METAL ARTICLES.

No. 383,030. Patented May 15, 1888.

5 Sheets-Sheet 2. H. WHITE. MACHINE EOE HEATING AND HAEDENING METALARTICLES.

(No Model.)

No. 383,030. Patented May l5, 1388.

(No Model.) 5 Sheets-Sheet 3. I-I. WHITE. MACHINE FOR-HEATING ANDHARDENING METAL ARTICLES.

Patented IVIaJy l5, 1888.

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(No Model.) 5 sheetssheen 4. Y

H. WHITE. MAGHINE FOR HEATING AND HARDBNING METAL ARTICLES. No. 383,030.Patented May 15, 1888.

(No Model.) 5 sheets-Sheen 5.`

H. WHITE.

MACHINE EOE HEATING AND HAEDENING METAL ARTICLES.

Patn'ed May 15, 1888.

wlTNEssEs 8M INVENTDH,

ATTDBNEYS,

Nrrnb 'STATES PATENT eric.

4HARVEY WHITE, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE VHITMAN & BARNESMANUFACTURING- OOMPANY OF OHIO.

MACHINE FOR HEATING AND HARDENING 4IlIIETAL. ARTICLES.

SPECIFICATION forming part of Letters Patent No. 383.030, dated May 15,1888. Application filed [lune 6, 1887. Serial No. 240,402. (No model.)

To cZZZ whom, it may concern:

Be it known that I, HART/EY WHITE, of Syracuse,in the county of Onondagaand State of New York, have invented new and useful Improvements inMachines for Heating and Hardening Metal Articles, of which thefollowing, taken in connection with the accompanying drawings, is afull, clear, and exact description.

This invention consists in a novel construetion of a machine designed tobe used in connection with an apparatus for heating mower and reaperknives or other metallic articles preparatory to either `hardening thesame or working them while hot.

The invention is fully illustrated in the annexed drawings, in whichM lFigure lis a top plan View of a machine embodying my invention inconnection with an apparatus forhardening mower and reaper knives. Fig.2 is a side elevation of the same. Figs. 3 and 4t are enlarged detachedplan and side views, respectively, of the main supportingframe of themachine. Fig. 5 is an enlarged longitudinal sectional view of one of thearms which carry the holders or tongs by which the knives or othermetallic articles are carried to and from the heater.- Fig. 6 is a frontview of a set of the aforesaid holders or tongs. Fig. 7 presents sideviews of the said tongs in different operative positions. Fig. 8presents edge and side views of one of the knives adapted to be carriedby the aforesaid tongs. Fig. 9 is a transversesectional view ofthedevices for sustaining the tongs in their different positions inrelation to the axis of their carrier. Fig. 10 is a detached face Viewof the lockiugplate of the tongs-carrying shaft. Fig. ll is an invertedplan View of the stationary plate to which one of the sets of segmentalracks is attached. Fig. 12 is a detached side view of said plate withthe pivoted tripping arm in engagement with the lug of the arm whichcarries the tongs. Fig. lis a detached plan view of the gears whichtransmit motion to the machine. Fig. 14 is a detached side Vview of thetripping arm lifter, and Fig. l5 is a Vertical transverse section of thecentral portion of the machine.

Similar letters of reference indicate corre spending parts.

S, Fig. 2, represents a stout rigid upright standard or post, on whichis rigidly mounted the main supporting-frame of the machine, said frameconsisting, mainly, of a plate, T, extending across the top and down onone side of the post S, and from the vertical portion of said plateprojects the vertical sleeve U, through which the upright tubular shaftu passes. A clamp, V, connected with the sleeve and embracing theaforesaid shaft, serves to prevent the same from rotating.

On the sleeve N is jou rnaled the turn-table A, which constitutes thepivoted support of the carriers which carry to and from the heater thearticles to be heated. Said carriers may be of any suitable form,preferably of the shape of arms B B, rigidly secured to the turn-table,and extending radiallytherefrom and provided with upward-'projectinglugs c c at their inner ends, for the purpose hereinafter explained.Longitudnally in the said arms arejournaled the shafts E E, to the innerend of each of which is affixed a bevel-pinion, F, and another pinion,F, is secured to each shaft outside of the periphery of the turn-tableA.

To the outer or free end of each shaft E is secured one or more holdersor tongs adapted to carry the knives j, or other articles to be heated.I prefer to employ for said purpose a jaw, c, firmly secured to theshaft E, and a jaw, a, hinged tothe aforesaid fixed jaw and providedwith an elongated shank, b, Fig. 7. A spring, c, pressing against theback of the shank b, holds the tongs or jaws a c normally closed.

From the sleeve U or main supporting-frame project brackets I, Fig. 2,which carry on their free ends segmental racks I', Figs. l and 2,adapted to engage the,under sides of the pinions F. Above the turntableA is a plate, C, Fig. 2, which is rigidly secured to the shaft n, andthus secured stationary in its position, and from the under side of saidplate project segment-al racks K K, adapted to engage the upper sides ofthe pinions F F.

The turn-table A receives intermittent ro` tary motion by means of camso o, projecting from the worm-wheel O and engaging successively theprojections or lugs Z Z on the under side of the turn-table, as shown inFig. 2 of the drawings. Aworm, w, engaging the wheel IOO 2 SQQOS O,imparts rotary motion to said wheel. The lugs Z Z correspond to the armsB B in regard to number and relative positions.

J represents the heater, which in this instance is represented in theform of a crucible containing melted lead, into which to immerse theknives to be heated; and YV in Fig. l of the drawings denotes awater-tank, into which to precipitate the heated knives for the purposeof hardening the same. The said heater and tank are so situated as tobring the paths of the moving holders or tongs a a b across the topthereof', and the segmental racks I and K are arranged in such relativepositions that on the approach of each arm B to the heater .the rack I',engaging the pinion F, turns the shaft-E so as to cause it to tilt thetongs a a b into a vertical position, and thereby immerse in the meltedlead of the heater the knife held by said tongs, as illustrated in Fig.2 of ythe drawings. The motion of the machine is so timed as to producethe requisite intervals of motion to maintain the knife submerged thenecessary length of time to heat the same to the required temperature.In the succeeding movement of the arm B the aforesaid rack and pinionimpart another quarter-turn to the shaft E, and the tongs are carried,in the position indicated by dotted lines in Fig. l of the drawings,toward the tank W. In the. movement of the arm B over the said tank therack K, Figs. 2, 1l, 15, engages the pinion F', and thereby turns theshaft E back a quarter-turn and thus brings the tongs again into aVertical position over the tank, into which the tongs are caused toautomatically drop the heated knife by the following mechanism.

On one end ofalever, P, Figs. 2, l5, pivoted to the post S, rests aplunger, f, which is eX- tended longitudinally through the tubular shaftn, on the upper end of which latter rides a sleeve, N, which is mountedloosely thereon. Said sleeve has rigidly attached to it or formedintegral with it an arm, D, which terminates with a downward projection,t, adapted to engage with the lugs c c of the arms B B, and pressedtoward the same by a spring, d, secured to the stationary plate C andpressing against the said arm D. From this arm is extended in oppositedirections another arm, D, the free end of which reaches across thepaths of the Shanks b b of the tongs, Fig. 2. The engagement of the armD with the lug cof one arm B prevents the arm D from striking the shankb of the tongs on the diametrically-opposite arm B,and by liftingthe armD off from the lug c said arm is swung on its pivot by the force of thespring d, and in this movement the arm D is caused to strike the shank band thereby open the tongs and release the knifej, as represented at theleft-hand portion of Fig. 7 of the drawings, and this is effected whenthe arm B is over the tank W. The arm D is lifted automatically over thelug c by the cams o o,passing over and depressing a push-bar,B, Fig. 2,which rides on the lever I? at the end opposite to that which supportsthe plunger f. The depression of the aforesaid push-bar R causes thelever I? to push up the plunger f, and thereby lift the arm D, which issupported on the upper end of the plunger by means of the sleeve N, ashereinbefore described, Fig. l5.

In order to permit of properly adjusting the action of tongs-trippingarm D', I connect the same adjustably to the arm D by pivoting theformer on the latter and providing the arm D with a segmental slot, 7i,for the reception of the bolt i, which passes through the arm D' andaforesaid slot and clamps the two arms together, Fig. 2.

To the free end of each arm B is firmly secured an annular plate, L,which is provided with notches a u uin its periphery, Fig. 2; and to theshaft E is rigidly attached a plate, M, to which is connected a suitablespring-actuated dog, g, adapted to engage the notches u a u, and thuspartially lock the shaft E in its position, so as to enable it to resistthe tendency of being turned by the pressure of the tripping-arm D onthe shank b of the tongs.

After the knifej has been dropped from the tongs into the tank WV, thetongs are again turned into a horizontal position by the succeedingmovement of the arm B, causing the rack I.to impart a quarter-turn tothe pinion F. This brings the tongs into a convenient position to permitof inserting between the jaws a a. another knife to be hardened. In thenext movement of the arm B the inner pinion, F', is caused to traverse arack, K, Figs. l and 2, of sufficient length to impart a halfturn to theshaft E, and thus bring the tongs in proper position to enter the heaterT by the subsequent engagement of the outer pinion, F, with the segmentI.

The machine is driven by a belt connecting a cone-pulley on the primemotor (not shown) with a cone-pulley, Y, on the shaft of the worm w, andby shifting said belt on the pulleys the motion of the machine can beregulated to the desired speed.

If desired, two or more holders or tongs may be connected with the shaftE, as represented. in Fig. 6 of the drawings, hence I do not limitmyself in this respect. Neither do I limit myself to the particular formof the tongs, as the same may have to be varied according to the shapeof the articles to be held by said tongs. Neither do I wish to limitmyself to the arrangement of the arms B B, extending radially from anintermittent rotary support, inasmuch as carriers of different forms,adapted to carry the articles to be heated, may be arranged to moveautomatically and intermittently toward and from the heater, either by areciprocating motion or oscillatory motion.

What I do claim as new, and desire to secure by Letters Patent, isM

1. In combination with the heater, carriers mounted on a rotatorysupport and with their free ends in a path across the heater, holders ortongs connected to said carriers, and a trip- IOS IIS

of arms carried on a rotatory support and arranged with their free endsin a path across the heater, shafts journaled longitudinally in saidarms, pinions secured to said shafts, segmental racks adapted to meshwith said pinions, and holders or tongs secured to said shafts,substantially as and for the purpose set forth.

4. In combination with the heater, a series of arms carried on arotatorysupport and with their free ends in a path across the heater, acorresponding series of projections on said support, a rotary camarranged to successively engage said projections,and holders carried onthe free ends of the said arms and adapted to carry the articles to beheated, substantially as set forth.

5. The combination of a series of arms extended from a rotatory support,a corresponding series of projections on said support, a rotary camarranged to successively engage said projections, shafts journaledlongitudinally on the aforesaid arms, holders or tongs connected to theouter ends of the said shafts, pinions secured to the inner end portionsof theshafts, and two sets of segmental racks arranged to engagcthepinions at diametrieally opposite points thereof, and the racks of eachset situated at different points in a circle concentric with the pivotedsupport of the aforesaid arms, substantially as described and shown.

6. In combination with the arms extended from a rotatory support, andthe normallyclosed tongs having one of their respective jaws locked onthe free ends of said arms and the companion jaws hinged to the fixedjaws and provided with tripping-shanks,and an arm sustained across thepath of the said trippingshanks and by their encounter open the tongs,substantially as set forth.

7. The combination of the turn-table A, the arms B B, projectingtherefrom and provided with the lugs c c, the jaws a a, locked on thefree ends of said arms, the jaws a' a', provided with the shanks I) b,the plate C, arranged stationary above the turn-table, the arm D,supported movably vertically and pivoted above turn-table A, the arms BB, projecting therefrom and provided with the lugs c c, the shafts E E,journaled longitudinally in said arms and having affixed to them thepinions F F', the brackets I, having affixed to them the segmental racksI', `adapted to engage the under side of the pinion F, the stationaryplateO, having af'dxed to it the segmental racks K, adapted to engagethe upper side of the other of the aforesaid pinions, thcjawsa a,rigidly attached to the outer ends of the shafts E E, the jaws u.' a',hinged to the said fixed jaws and provided with the shanks b b, thesprings e e, holding the jaws normally closed, the pivoted arm D,supported movably vertically and adapted to engage the lugs c 0,thespring d, arranged to actuate the arm D, the arm D', extended from thearm D and reaching with its free end across the path of the shanks b Z2,and the plungerf, adapted to lift the arm D, substantially as and forthe purpose set forth.

9. The combination ot' the arm B, carried on a rotatory support, theshaft E, provided with the pinions F F', the segmental racks I and K,adapted to engage said pinions, respectively, at opposite sides, thelocking-plate L, rigidly attached to the arm B, the plate M, fixed tothe shaft E, and the dogg, connected to the latter plate and adapted toengage the locking-plate at different points ofthe circumferencethereof, substantially as described and shown, for the purpose setforth.

10. In combination with` the arms B B, carried on a rotatory support andprovided with lugs c c, the shafts E E, provided with the pinions F F',the segment-al racks I' and K, adapted to engage said pinions,respectively, at opposite sides, the jaws a a, fixed to said shafts,thejaws a' a', hinged and provided with the shanks b b, thelocking-plates L L, rigid on the arms B B, the plates M M, fixed to theshafts E E, the dogs g g, connected to the latter plates and adapted toengage the lockingplates, the stationary plate C, the arm D, pivotedabove said plate and movable vertically and adapted to engage the lugs cc, the spring d, arranged to actuate the arm D, the arm D', extendedfrom the aforesaid arm and having its free end in the path of the Shanksb b, and the plunger f, adapted to lift the arm D and throw the same outof engagement with the lug c, substantially as described and shown.

ll. In combination with the arms B B, carried on a rotatory support, andthejaws a a', carried by said arms and provided with the Shanks b b, thespring-actuated pivoted arm D, provided with the sloth, the arm D',provided on the arm D, and the clampingdoolt t', passing through the armD' and slot h and adj ustably securing the two arms to each other, asdescribed and shown.

l2. rIhe combination of the tubular shaft a, turn-table A, provided withthe projections Z Z, arms B B, extended from said turn-table andprovided willi lugs c c, tongs a a' b, carried by said arms, the plungerf, extending longi` tudinally through the shaft n, the sleeve N,

4 aasnoeo riding on the upper end of said plunger and having rigidlysecured to it the arm D, adapted to engage thelugs c c, the arm D',extended from the arm D and adapted to trip the tongs, 5 the Wheel O,having aixed to itthe cams 0 o, the pivoted lever P, having one endunder the plunger f, and the pushbar R, riding on the opposite end ofsaid lever and arranged in the path of the cams 0 07 to be actuatedthereby7 [o substantially as described and shown.

county of Onondaga,in the State of New York7 l this 2d day of June,1887.'

HARVEY VHITE. [L s] Witnesses:

ROYAL H. THoM, L. J. WELLS.

